US4695381A - Filter for continuous filtering of a suspension under pressure - Google Patents
Filter for continuous filtering of a suspension under pressure Download PDFInfo
- Publication number
- US4695381A US4695381A US06/858,769 US85876986A US4695381A US 4695381 A US4695381 A US 4695381A US 85876986 A US85876986 A US 85876986A US 4695381 A US4695381 A US 4695381A
- Authority
- US
- United States
- Prior art keywords
- filter
- filtering
- zone
- filtrate
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 42
- 239000000725 suspension Substances 0.000 title claims abstract description 15
- 239000000706 filtrate Substances 0.000 claims abstract description 29
- 239000007791 liquid phase Substances 0.000 claims abstract description 10
- 239000007792 gaseous phase Substances 0.000 claims abstract description 9
- 239000012065 filter cake Substances 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000012071 phase Substances 0.000 claims 5
- 239000004744 fabric Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
- B01D35/31—Filter housing constructions including arrangements for environmental protection, e.g. pressure resisting features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
- B01D33/23—Construction of discs or component sectors thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
- B01D33/66—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by gases or by heating
- B01D33/663—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by gases or by heating by direct contact with a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/801—Driving means, shaft packing systems or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
- B01D33/807—Accessories integrally combined with devices for controlling the filtration by level measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
- B01D33/808—Accessories integrally combined with devices for controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/20—Pressure-related systems for filters
- B01D2201/204—Systems for applying vacuum to filters
Definitions
- the present invention relates to a filter for continuous filtering of a suspension under pressure.
- Filters for continuous filtering of a suspension are common within e.g. cellulose industry where suspensions have large volume flow and have comparatively high concentration of solid phase.
- the type of filter, up to now, most commonly existing for this purpose is rotating drum or disc filters which operate with vacuum for establishing required difference pressure over the filter.
- the difference pressure in the liquid phase is preferably lower than that in the gaseous phase.
- FIG. 3 is a view schematically illustrating the operation of the filter
- FIG. 4 is a view corresponding to FIG. 3 and illustrating another embodiment of the invention.
- the filter shown in FIG. 1 includes a substantially cylindrical pressure vessel 1, in which a shaft 2 provided with a number of filter discs 3 is rotatably journalled.
- Each filter disc consists of a plurality of disc sectors 4 (see FIG. 2) and the disc sectors can e.g. have the configuration that is shown in U.S. patent application No. 577,913 filed Feb. 7, 1984.
- the filter sectors consist of a surrounding filter cloth and interior channels (not shown) which for each filter sector are connected to an axial channel formed in the shaft 2, i.e. a channel for each filter sector, for discharging the filtrate obtained during the filtering operation to filtrate valve 5 arranged at one end of the shaft 2.
- filtering and drying of the filter cake takes place in gaseous phase with air, vapour or another appropriate gas present.
- washing of the filter cloth can also take place in the zone 7 by means of some appropriate wash device 12, e.g. a spray.
- the filtrate valve 5 is provided with a number of filtrate outlets 13, 14 and 15 corresponding to the number of filtering zones.
- the removed filter cake falls down into a funnel 16 provided with an out-feed screw 17.
- FIG. 3 shematically illustrates how the filter opeates.
- the suspension to be filtered is supplied to the filter 1 via inlet 18 and forms in the filter a level 19.
- a difference pressure required for a filtering operation in a filter according to the invention is created by means of an appropriate device 20, e.g. a blower.
- the filter cake removed by means of the device 11 falls down to the outfeed screw 17 and is fed therefrom to an outfeed sluice 20'.
- the filtrate from the filtering zones 7 is discharged from the pressure vessel 1 via the filtrate outlet 13 to a sluice 21 and further to a filtrate tank 22.
- the filtrate from the filtering zone 8 is discharged from the pressure vessel 1 via the filtrate outlet 14 to the filtrate tank 22.
- the filtrate from the filtering zone 9 is discharged from the pressure vessel via the filtrate outlet 15 to the filtrate tank 22 and enters into the tank above the level therein in order to obtain a separation between the filtrate liquid and co-conveyed gas.
- the gas which is squeezed through the filter cake 10 in the filtering zone 9 by means of the positive pressure generated by the blower 20 and follows the filtrate into the filtrate outlet 15, is re-circulated from the filtrate tank 22 back to the filter via the blower 20.
- the lower intermediate walls 6 are inclined downwardly and their outer ends are positioned at a level, below the suspension level 19 for preventing gas from being present in the filter sectors during the filtering in the liquid phase 8.
- the filter For obtaining the difference pressure over the filter required for the filtering operation, some form of restriction in the gas circulation via the blower 20 is required.
- the filter operates with a filter cake 10 on the filter elements 4, the filter cake becomes the required restriction.
- the required restriction can, according to the invention, be established in the filtrate outlet 15 by means of some appropriate means. As shown in FIG. 3, this means consists of a valve 23, which throttles the filtrate outlet 15 when no other restriction exists and opens when a filter cake is formed on the filter.
- the valve 23 is particularly useful when the suspension level in the vessel for some reason sinks below the shaft 6.
- a further alternative is to provide the filtrate outlet 15 with a seprate liquid lock instead of the valve 23.
- the solutions mentioned above having the valve 23 are, however, preferred in most cases, since then no aditional restriction or resistance loads the blower 20 during normal filtrating and thereby the entire capacity of the blower can be utilized for the filtering operation.
- a control valve 25 arranged in the filtrate outlet 14.
- One way of governing this valve is by means of a level sensor 26 on the filter 1.
- This level sensor arranged to govern the control valve 25 and the rotation speed of the filter so that the suspension level 19 is kept constant at a preset value, firstly by governing the control valve until it is completely open, whereupon the level sensor begins to govern the velocity of the filter from a preset minimum value and upwards so that the suspension level is kept constant.
- the invention has been described above and shown on the drawings in connection with a disc filter.
- the invention can also relate to a drum filter, i.e. a filter element in the form of a rotating drum with surrounding filter cloth.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Filtration Of Liquid (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8502122 | 1985-05-02 | ||
SE8502122A SE451948B (sv) | 1985-05-02 | 1985-05-02 | Filter for kontinuerlig filtrering under tryck av en suspension |
Publications (1)
Publication Number | Publication Date |
---|---|
US4695381A true US4695381A (en) | 1987-09-22 |
Family
ID=20360041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/858,769 Expired - Lifetime US4695381A (en) | 1985-05-02 | 1986-05-02 | Filter for continuous filtering of a suspension under pressure |
Country Status (6)
Country | Link |
---|---|
US (1) | US4695381A (sv) |
JP (1) | JPH0675656B2 (sv) |
CA (1) | CA1268427A (sv) |
DE (1) | DE3614668A1 (sv) |
FI (1) | FI83596C (sv) |
SE (1) | SE451948B (sv) |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0315388A2 (en) * | 1987-11-05 | 1989-05-10 | A. Ahlstrom Corporation | Method and apparatus for treating fiber suspension |
US4929355A (en) * | 1985-02-05 | 1990-05-29 | Ab Hedemora Verkstader | Method and apparatus for the separation of caustic liquor, lime sludge and sludge in a causticizing process |
US5192454A (en) * | 1987-11-05 | 1993-03-09 | A. Ahlstrom Corporation | Method for treating fiber suspension |
US5227064A (en) * | 1989-03-13 | 1993-07-13 | Kent Strid | Filter for continuous filtration |
WO1994001617A1 (en) * | 1992-07-07 | 1994-01-20 | Larox Oy | Method for filtering a product formed in causticization |
US5401422A (en) * | 1990-10-18 | 1995-03-28 | Eastman Kodak Company | Separation method for solid constituents of a suspension and device for carrying out this method |
AU666227B2 (en) * | 1992-11-06 | 1996-02-01 | Andritz-Patentverwaltungs-Gmbh | Process and installation for the separation of solid-liquid-mixtures |
WO1999049951A1 (en) * | 1998-03-30 | 1999-10-07 | Outokumpu Oyj | Apparatus for removing material from a pressurised filter |
US5968372A (en) * | 1996-12-16 | 1999-10-19 | Baker Hughes Incorporated | Logic controlled traversing shower |
EP0967000A1 (en) * | 1998-06-25 | 1999-12-29 | Outokumpu Oyj | Method for producing a filter cake |
US6063294A (en) * | 1996-10-15 | 2000-05-16 | Baker Hughes Incorporated | Uniform area shower for disc filter |
US6258282B1 (en) * | 1997-08-21 | 2001-07-10 | Kvaerner Pulping Ab | Rotatable filter system for filtration of a flowing substance |
US6409929B2 (en) * | 1992-11-11 | 2002-06-25 | Bokela Ingenieurgesellschaft Fur Mechanische Verfahrenstechnik Mbh | Steam drying of rotary filter cakes without crack formation |
US20030127401A1 (en) * | 1999-01-19 | 2003-07-10 | Benesi Steve C. | Filter apparatus operating features |
US20050121381A1 (en) * | 2003-12-05 | 2005-06-09 | Keith Sheets | Filter disc with panel sectors |
WO2005100681A1 (en) * | 2004-04-16 | 2005-10-27 | Kvaerner Pulping Ab | Method and device for washing of lime mud |
US20070235394A1 (en) * | 2005-10-28 | 2007-10-11 | Dendel Joseph W | Mass thickening apparatus |
US20080164222A1 (en) * | 2004-11-25 | 2008-07-10 | Andritz Oy | Method and Apparatus for Thickening Lime Mud in a Disc Filter |
US20100032388A1 (en) * | 2007-02-21 | 2010-02-11 | Hydrotech Veolia Water Systems Aktiebolag | Device and Method for Cleaning a Filter Cloth |
CN101829449A (zh) * | 2010-05-18 | 2010-09-15 | 王光华 | 一种旋转压力过滤机 |
EP2468380A1 (de) * | 2010-12-27 | 2012-06-27 | Andritz KMPT GmbH | Filtervorrichtung |
US20120273432A1 (en) * | 2011-02-05 | 2012-11-01 | Urs Peuker | Filter Device, Method for Its Operation and Use Thereof |
US20120285867A1 (en) * | 2011-05-11 | 2012-11-15 | Elisabeth Schmidt | Filter device, method for its operation and use thereof |
US20140353260A1 (en) * | 2011-12-15 | 2014-12-04 | Andritz Oy | Method and apparatus for washing pulp by means of intensified suction |
US20140374363A1 (en) * | 2012-02-06 | 2014-12-25 | Andritz Oy | Method and apparatus for reducing the thickness of a precoat layer of a disc filter |
US9004289B2 (en) | 2010-12-27 | 2015-04-14 | Andritz Kmpt Gmbh | Filter device |
WO2018186795A1 (en) * | 2017-04-07 | 2018-10-11 | Valmet Ab | Pressurized disc filter for causticization liquors containing lime mud |
US10391728B2 (en) | 2014-04-08 | 2019-08-27 | Prime Solution Inc. | Rotary fan press with auger |
US10807024B2 (en) | 2018-06-05 | 2020-10-20 | Andritz Kmpt Gmbh | Filter drum for a vacuum and/or pressure filtration device |
US10870073B2 (en) | 2018-06-05 | 2020-12-22 | Andritz Kmpt Gmbh | Vacuum and/or pressure filtration device for filtration of a suspension |
US11000791B2 (en) * | 2019-03-06 | 2021-05-11 | Veolia Water Solutions & Technologies Support | Rotary disc filter having backwash guides |
US20210252436A1 (en) * | 2018-06-21 | 2021-08-19 | Valmet Ab | Vacuum filter |
US20210387114A1 (en) * | 2018-11-05 | 2021-12-16 | Ishigaki Company Limited | Filter cloth cleaning method of filter press |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE463601B (sv) * | 1989-03-13 | 1990-12-17 | Hedemora Ab | Filter foer kontinuerlig filtrering av en suspension |
US5053123A (en) * | 1989-04-17 | 1991-10-01 | Ingersoll-Rand Company | Adjustable valve for varying filtrate composition from filters |
SE464390B (sv) * | 1989-06-14 | 1991-04-22 | Celleco Hedemora Ab | Filter foer kontinuerlig filtrering |
DE4123143C1 (sv) * | 1991-07-12 | 1992-11-12 | Werner Prof. Dr.-Ing. 6740 Landau De Stahl | |
DE4225818C2 (de) * | 1991-09-11 | 1993-12-09 | Geldmacher Joachim | Filter zum kontinuierlichen Filtern von Feststoffe o. dgl. aufweisenden Flüssigkeiten |
US5443534A (en) * | 1992-07-21 | 1995-08-22 | Vlt Corporation | Providing electronic components for circuity assembly |
DE4238087C3 (de) * | 1992-11-11 | 1997-12-04 | Bokela Ing Gmbh | Verfahren zur mechanischen Entfeuchtung eines Filterkuchens und Vorrichtung zur Durchführung des Verfahrens |
SE509553C2 (sv) * | 1996-11-08 | 1999-02-08 | Alfa Laval Ab | Förfarande och anordning för separering av fina partiklar ur bakvatten |
FI111812B (sv) * | 2000-12-08 | 2003-09-30 | Outokumpu Oy | Filtrerförfarande |
AT505247B1 (de) * | 2007-05-30 | 2009-01-15 | Andritz Ag Maschf | Vakuumunterstütztes entwässerungsverfahren und rotierender filter zur durchführung des entwässerungsverfahrens |
AT514597B1 (de) | 2013-10-11 | 2015-02-15 | Andritz Ag Maschf | Filter zum kontinuierlichen Filtern einer Suspension unter Druck |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR701374A (fr) * | 1925-10-28 | 1931-03-14 | Procédé de filtrage et appareil pour sa réalisation | |
US4328099A (en) * | 1980-02-08 | 1982-05-04 | Krauss-Maffei Aktiengesellschaft | Multi-disk rotary filter |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1401772A (en) * | 1971-11-18 | 1975-07-30 | Simonacco Ltd | Filters |
FI54060C (fi) * | 1976-09-14 | 1978-10-10 | Rauma Repola Oy | Skivfilter |
DE2852175A1 (de) * | 1978-12-02 | 1980-06-12 | Krauss Maffei Ag | Steuerkopf an einem zellendrehfilter |
-
1985
- 1985-05-02 SE SE8502122A patent/SE451948B/sv not_active IP Right Cessation
-
1986
- 1986-04-29 FI FI861791A patent/FI83596C/sv not_active IP Right Cessation
- 1986-04-30 DE DE19863614668 patent/DE3614668A1/de not_active Ceased
- 1986-05-02 CA CA000508264A patent/CA1268427A/en not_active Expired - Lifetime
- 1986-05-02 JP JP61102944A patent/JPH0675656B2/ja not_active Expired - Lifetime
- 1986-05-02 US US06/858,769 patent/US4695381A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR701374A (fr) * | 1925-10-28 | 1931-03-14 | Procédé de filtrage et appareil pour sa réalisation | |
US4328099A (en) * | 1980-02-08 | 1982-05-04 | Krauss-Maffei Aktiengesellschaft | Multi-disk rotary filter |
Cited By (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4929355A (en) * | 1985-02-05 | 1990-05-29 | Ab Hedemora Verkstader | Method and apparatus for the separation of caustic liquor, lime sludge and sludge in a causticizing process |
EP0315388A3 (en) * | 1987-11-05 | 1989-05-31 | A. Ahlstrom Corporation | Method and apparatus for treating fiber suspension |
US5073264A (en) * | 1987-11-05 | 1991-12-17 | A. Ahlstrom Corporation | Apparatus for treating fiber suspension |
US5192454A (en) * | 1987-11-05 | 1993-03-09 | A. Ahlstrom Corporation | Method for treating fiber suspension |
EP0315388A2 (en) * | 1987-11-05 | 1989-05-10 | A. Ahlstrom Corporation | Method and apparatus for treating fiber suspension |
US5227064A (en) * | 1989-03-13 | 1993-07-13 | Kent Strid | Filter for continuous filtration |
US5401422A (en) * | 1990-10-18 | 1995-03-28 | Eastman Kodak Company | Separation method for solid constituents of a suspension and device for carrying out this method |
WO1994001617A1 (en) * | 1992-07-07 | 1994-01-20 | Larox Oy | Method for filtering a product formed in causticization |
AU666227B2 (en) * | 1992-11-06 | 1996-02-01 | Andritz-Patentverwaltungs-Gmbh | Process and installation for the separation of solid-liquid-mixtures |
US6409929B2 (en) * | 1992-11-11 | 2002-06-25 | Bokela Ingenieurgesellschaft Fur Mechanische Verfahrenstechnik Mbh | Steam drying of rotary filter cakes without crack formation |
US6063294A (en) * | 1996-10-15 | 2000-05-16 | Baker Hughes Incorporated | Uniform area shower for disc filter |
US5968372A (en) * | 1996-12-16 | 1999-10-19 | Baker Hughes Incorporated | Logic controlled traversing shower |
US6258282B1 (en) * | 1997-08-21 | 2001-07-10 | Kvaerner Pulping Ab | Rotatable filter system for filtration of a flowing substance |
WO1999049951A1 (en) * | 1998-03-30 | 1999-10-07 | Outokumpu Oyj | Apparatus for removing material from a pressurised filter |
AU755208B2 (en) * | 1998-03-30 | 2002-12-05 | Outokumpu Oyj | Apparatus for removing material from a pressurised filter |
EP0967000A1 (en) * | 1998-06-25 | 1999-12-29 | Outokumpu Oyj | Method for producing a filter cake |
US6419835B1 (en) * | 1998-06-25 | 2002-07-16 | Outokumpu Oyj | Method for producing a filter cake |
AU753687B2 (en) * | 1998-06-25 | 2002-10-24 | Outokumpu Oyj | Method for producing a filter cake |
US20030127401A1 (en) * | 1999-01-19 | 2003-07-10 | Benesi Steve C. | Filter apparatus operating features |
US20050121381A1 (en) * | 2003-12-05 | 2005-06-09 | Keith Sheets | Filter disc with panel sectors |
US7314556B2 (en) | 2003-12-05 | 2008-01-01 | Andritz Inc. | Filter disc with panel sectors |
WO2005100681A1 (en) * | 2004-04-16 | 2005-10-27 | Kvaerner Pulping Ab | Method and device for washing of lime mud |
US20070221345A1 (en) * | 2004-04-16 | 2007-09-27 | Patrik Lownertz | Method and Device for Washing of Lime Mud |
US7686964B2 (en) * | 2004-04-16 | 2010-03-30 | Metso Fiber Karlstad Ab | Method and device for washing of lime mud |
US20080164222A1 (en) * | 2004-11-25 | 2008-07-10 | Andritz Oy | Method and Apparatus for Thickening Lime Mud in a Disc Filter |
US8002994B2 (en) * | 2004-11-25 | 2011-08-23 | Andritz Oy | Method and apparatus for thickening lime mud in a disc filter |
US20070235394A1 (en) * | 2005-10-28 | 2007-10-11 | Dendel Joseph W | Mass thickening apparatus |
US20100032388A1 (en) * | 2007-02-21 | 2010-02-11 | Hydrotech Veolia Water Systems Aktiebolag | Device and Method for Cleaning a Filter Cloth |
US8101090B2 (en) * | 2007-02-21 | 2012-01-24 | Veolia Water Solutions & Technologies Support | Device and method for cleaning a filter cloth |
US8444862B2 (en) | 2007-02-21 | 2013-05-21 | Veolia Water Solutions & Technologies Support | Device and method for cleaning a filter cloth |
CN101829449A (zh) * | 2010-05-18 | 2010-09-15 | 王光华 | 一种旋转压力过滤机 |
US9004289B2 (en) | 2010-12-27 | 2015-04-14 | Andritz Kmpt Gmbh | Filter device |
EP2468380A1 (de) * | 2010-12-27 | 2012-06-27 | Andritz KMPT GmbH | Filtervorrichtung |
US20120160748A1 (en) * | 2010-12-27 | 2012-06-28 | Gunnar Grim | Filter Device |
DE102010061561A1 (de) * | 2010-12-27 | 2012-06-28 | Andritz Kmpt Gmbh | Filtervorrichtung |
US9216369B2 (en) * | 2010-12-27 | 2015-12-22 | Andritz Kmpt Gmbh | Filter device |
US20120273432A1 (en) * | 2011-02-05 | 2012-11-01 | Urs Peuker | Filter Device, Method for Its Operation and Use Thereof |
US9486721B2 (en) * | 2011-05-02 | 2016-11-08 | Siemens Aktiengesellschaft | Filter device, method for its operation and use thereof |
US20120285867A1 (en) * | 2011-05-11 | 2012-11-15 | Elisabeth Schmidt | Filter device, method for its operation and use thereof |
US8967390B2 (en) * | 2011-05-11 | 2015-03-03 | Siemens Aktiengesellschaft | Filter device, method for its operation and use thereof |
US20140353260A1 (en) * | 2011-12-15 | 2014-12-04 | Andritz Oy | Method and apparatus for washing pulp by means of intensified suction |
US9901853B2 (en) * | 2011-12-15 | 2018-02-27 | Andritz Oy | Method and apparatus for washing pulp by means of intensified suction |
US20140374363A1 (en) * | 2012-02-06 | 2014-12-25 | Andritz Oy | Method and apparatus for reducing the thickness of a precoat layer of a disc filter |
US9259674B2 (en) * | 2012-02-06 | 2016-02-16 | Andritz Oy | Method and apparatus for reducing the thickness of a precoat layer of a disc filter |
US10391728B2 (en) | 2014-04-08 | 2019-08-27 | Prime Solution Inc. | Rotary fan press with auger |
WO2018186795A1 (en) * | 2017-04-07 | 2018-10-11 | Valmet Ab | Pressurized disc filter for causticization liquors containing lime mud |
US10807024B2 (en) | 2018-06-05 | 2020-10-20 | Andritz Kmpt Gmbh | Filter drum for a vacuum and/or pressure filtration device |
US10870073B2 (en) | 2018-06-05 | 2020-12-22 | Andritz Kmpt Gmbh | Vacuum and/or pressure filtration device for filtration of a suspension |
US20210252436A1 (en) * | 2018-06-21 | 2021-08-19 | Valmet Ab | Vacuum filter |
US11980837B2 (en) * | 2018-06-21 | 2024-05-14 | Valmet Ab | Rotary drum vacuum filter with a throttling valve |
US20210387114A1 (en) * | 2018-11-05 | 2021-12-16 | Ishigaki Company Limited | Filter cloth cleaning method of filter press |
US11000791B2 (en) * | 2019-03-06 | 2021-05-11 | Veolia Water Solutions & Technologies Support | Rotary disc filter having backwash guides |
Also Published As
Publication number | Publication date |
---|---|
JPH0675656B2 (ja) | 1994-09-28 |
FI83596B (fi) | 1991-04-30 |
CA1268427A (en) | 1990-05-01 |
FI861791A (fi) | 1986-11-03 |
SE451948B (sv) | 1987-11-09 |
SE8502122D0 (sv) | 1985-05-02 |
DE3614668A1 (de) | 1986-12-18 |
SE8502122L (sv) | 1986-11-03 |
FI861791A0 (fi) | 1986-04-29 |
JPS6230518A (ja) | 1987-02-09 |
FI83596C (sv) | 1991-08-12 |
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